Refactor Java agent to let applications manage the log handlers

[lttng-ust.git] / liblttng-ust-java-agent / java / lttng-ust-agent-log4j / org / lttng / ust / agent / log4j / LTTngLog4j.java

diff --git a/liblttng-ust-java-agent/java/lttng-ust-agent-log4j/org/lttng/ust/agent/log4j/LTTngLog4j.java b/liblttng-ust-java-agent/java/lttng-ust-agent-log4j/org/lttng/ust/agent/log4j/LTTngLog4j.java
deleted file mode 100644 (file)
index 534cc94..0000000
--- a/liblttng-ust-java-agent/java/lttng-ust-agent-log4j/org/lttng/ust/agent/log4j/LTTngLog4j.java
+++ /dev/null
@@ -1,121 +0,0 @@
-/*
- * Copyright (C) 2014 - Christian Babeux <christian.babeux@efficios.com>
- *
- *
- * This library is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License, version 2.1 only,
- * as published by the Free Software Foundation.
- *
- * This library is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
- * for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this library; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-package org.lttng.ust.agent.log4j;
-
-import java.util.Enumeration;
-import java.util.Iterator;
-import java.util.Vector;
-
-import org.apache.log4j.LogManager;
-import org.apache.log4j.Logger;
-import org.lttng.ust.agent.LogFrameworkSkeleton;
-
-/**
- * log4j logging framework
- *
- * @author Christian Babeux
- */
-public class LTTngLog4j extends LogFrameworkSkeleton {
-
-       private LTTngLogAppender appender;
-       private Boolean attached;
-
-       /**
-        * Constructor
-        *
-        * @param isRoot
-        *            If this logger is a root logger or not.
-        */
-       public LTTngLog4j(Boolean isRoot) {
-               super();
-               this.appender = new LTTngLogAppender(isRoot);
-               this.attached = false;
-       }
-
-       @Override
-       public Boolean enableLogger(String name) {
-               if(!super.enableLogger(name)) {
-                       return false;
-               }
-
-               /* The first enable of any event triggers the attachment to the root logger */
-               if (getEventCount() == 1 && !this.attached) {
-                       attachToRootLogger();
-               }
-
-               return true;
-       }
-
-       @Override
-       public Boolean disableLogger(String name) {
-               if(!super.disableLogger(name)) {
-                       return false;
-               }
-
-               /* Detach from the root logger when the event counts reach zero */
-               if (getEventCount() == 0 && this.attached) {
-                       detachFromRootLogger();
-               }
-
-               return true;
-       }
-
-       @Override
-       public Iterator<String> listLoggers() {
-               Vector<String> logs = new Vector<String>();
-               for (Enumeration<?> loggers = LogManager.getCurrentLoggers(); loggers.hasMoreElements(); ) {
-                       Logger logger = (Logger) loggers.nextElement();
-                       String name = logger.getName();
-                       logs.add(name);
-               }
-
-               return logs.iterator();
-       }
-
-       @Override
-       public Boolean isRoot() {
-               return appender.isRoot();
-       }
-
-       @Override
-       public void reset() {
-               super.reset();
-               detachFromRootLogger();
-       }
-
-       private void attachToRootLogger() {
-               if (this.attached) {
-                       return;
-               }
-
-               Logger logger = Logger.getRootLogger();
-               logger.addAppender(this.appender);
-               this.attached = true;
-       }
-
-       private void detachFromRootLogger() {
-               if (!this.attached) {
-                       return;
-               }
-
-               Logger logger = Logger.getRootLogger();
-               logger.removeAppender(this.appender);
-               this.attached = false;
-       }
-}